Classification
576 - Genetics & evolution
600 - Technology
700 - The arts; fine & decorative arts
166
620 - Engineering & allied operations
153
900 - History & geography
128
333 - Economics of land & energy
121
000 - Computer science, information & general works
116
363 - Other social problems & services
64
330 - Economics
61
380 - Commerce, communications & transportation
57
610 - Medicine & health
41
580 - Plants (Botany)
36
500 - Natural sciences & mathematics
34
140 - Specific philosophical schools
29
340 - Law
23
720 - Architecture
23
658 - General management
21
320 - Political science
19
414 - Phonology & phonetics
18
800 - Literature & rhetoric
18
630 - Agriculture & related technologies
17
370 - Education
16
400 - Language
16
530 - Physics
15
581 - Specific topics in natural history
14
540 - Chemistry & allied sciences
13
304 - Factors affecting social behavior
10
300 - Social sciences
9
100 - Philosophy & psychology
8
551 - Geology, hydrology & meteorology
8
170 - Ethics
7
410 - Linguistics
7
301 - Sociology & anthropology
6
612 - Human physiology
4
770 - Photography, photographs & computer art
3
200 - Religion
2
350 - Public administration & military science
2
615 - Pharmacology & therapeutics
2
650 - Management & auxiliary services
2
657 - Accounting
2
780 - Music
2
791 - Public performances
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1